Science chp.1 Flashcards
1
Q
motion
A
an objects change in position relative to a reference point
2
Q
speed
A
the distance travel by the time interval during which the motion occured
3
Q
velocity
A
the speed of an object in a certain direction
4
Q
acceleration
A
the rate at which velocity changes over time
5
Q
force
A
a push or pull exerted on an object in order to change the motion
6
Q
newton
A
the si unit of force
7
Q
net force
A
the combination of all forces acting on an object
8
Q
friciton
A
a force that opposes motion between 2 surfaces that are in contact
9
Q
gravity
A
a force of attraction between 2 objects that is due to there masses
10
Q
weight
A
a measure of the gravitational force exerted on an object
11
Q
mass
A
a measure of matter
